CN110194171B - Determination method and device of driving demand torque, vehicle and storage medium - Google Patents
Determination method and device of driving demand torque, vehicle and storage medium Download PDFInfo
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- CN110194171B CN110194171B CN201910456934.9A CN201910456934A CN110194171B CN 110194171 B CN110194171 B CN 110194171B CN 201910456934 A CN201910456934 A CN 201910456934A CN 110194171 B CN110194171 B CN 110194171B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0043—Signal treatments, identification of variables or parameters, parameter estimation or state estimation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
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Abstract
The embodiment of the invention discloses a method and a device for determining driving demand torque, a vehicle and a storage medium. The method comprises the following steps: the method comprises the steps of searching a pre-stored information association table, determining a first association information item and a second association information item corresponding to a current vehicle target driving mode, determining an output torque corresponding to the current vehicle speed of the target driving mode according to the first association information item, determining a weight coefficient corresponding to the current accelerator pedal opening degree of the target driving mode according to the second association information item, and determining the current driving demand torque of the target driving mode according to the output torque and the weight coefficient. Compared with the prior art, the embodiment of the invention respectively determines the corresponding output torque and the weight coefficient according to the current vehicle speed and the current accelerator pedal opening, and further determines the driving demand torque according to the output torque and the weight coefficient, thereby effectively determining the current driving demand torque of the target driving mode.
Description
Technical Field
The embodiment of the invention relates to the technical field of vehicle control, in particular to a method and a device for determining driving demand torque, a vehicle and a storage medium.
Background
The pure electric vehicle has the advantages of zero emission, low energy consumption and the like, and is more and more widely applied in daily life. With the continuous improvement of user's demand, the performance of whole car is also constantly developing, for example, dynamic nature and economic nature etc. are better and better.
The driving demand torque is the torque demand of a driver on a vehicle power system, and has great influence on the driving performance, the economical efficiency, the dynamic performance and other performances of the whole vehicle. In the prior art, the driving demand torque is mostly determined by using a single mapping relation between a vehicle speed or an accelerator opening and the driving demand torque, and the emphasis is also placed on correcting or selecting the driving demand torque, for example, correcting according to a change rate of the accelerator opening, selecting according to whether a gear or a preset function is turned on, and the like.
The factors considered by the determination modes are single, so that the driving demand torque of the whole vehicle cannot be effectively determined, and the requirements of a driver are met.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining driving demand torque, a vehicle and a storage medium, which are used for effectively determining the current driving demand torque of the vehicle.
In a first aspect, an embodiment of the present invention provides a method for determining a driving demand torque, including:
searching a pre-stored information association table, and determining a first association information item and a second association information item corresponding to the current vehicle target driving mode;
determining an output torque corresponding to the current vehicle speed of the target driving mode according to the first associated information item;
determining a weight coefficient corresponding to the current accelerator pedal opening degree of the target driving mode according to the second associated information item;
and determining the current driving demand torque of the target driving mode according to the output torque and a weight coefficient.
In a second aspect, an embodiment of the present invention further provides a device for determining a driving demand torque, including:
the information determining module is used for searching a prestored information association table and determining a first association information item and a second association information item corresponding to the current vehicle target driving mode;
the output torque determining module is used for determining the output torque corresponding to the current vehicle speed of the target driving mode according to the first associated information item;
the weight coefficient determining module is used for determining a weight coefficient corresponding to the current accelerator pedal opening degree of the target driving mode according to the second related information item;
and the required torque determining module is used for determining the current driving required torque of the target driving mode according to the output torque and a weight coefficient.
In a third aspect, an embodiment of the present invention further provides a vehicle, including:
one or more controllers;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more controllers, the one or more controllers are caused to implement the determination method of the driving demand torque according to the first aspect.
In a fourth aspect, embodiments of the present invention also provide a storage medium having stored thereon a computer program that, when executed by a controller, implements the method of determining the driving demand torque as described in the first aspect.
The embodiment of the invention provides a method and a device for determining a driving demand torque, a vehicle and a storage medium, wherein a first relevant information item and a second relevant information item corresponding to a current vehicle target driving mode are determined by searching a pre-stored information association table, an output torque corresponding to a current vehicle speed of the target driving mode is determined according to the first relevant information item, a weight coefficient corresponding to a current accelerator pedal opening degree of the target driving mode is determined according to the second relevant information item, and the current driving demand torque of the target driving mode is determined according to the output torque and the weight coefficient. Compared with the prior art, the embodiment of the invention respectively determines the corresponding output torque and the weight coefficient according to the current vehicle speed and the current accelerator pedal opening, and further determines the driving demand torque according to the output torque and the weight coefficient, thereby effectively determining the current driving demand torque of the target driving mode.
Drawings
Fig. 1 is a flowchart of a method for determining a driving demand torque according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining a driving demand torque according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a maximum output torque curve corresponding to three driving modes of a vehicle type according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram of a minimum output torque curve corresponding to three driving modes of a vehicle type according to a second embodiment of the present invention;
fig. 5 is a schematic diagram of weight coefficient curves corresponding to three driving modes of a vehicle type according to a second embodiment of the present invention;
FIG. 6 is a graphical illustration of an accelerator pedal opening dimension for a driving demand torque in accordance with a second embodiment of the present invention;
FIG. 7 is a graphical illustration of a vehicle speed dimension for a torque demand for driving provided by a second embodiment of the present invention;
fig. 8 is a structural diagram of a determination device of a driving demand torque according to a third embodiment of the present invention;
fig. 9 is a structural diagram of a vehicle according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. In addition, the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
Example one
Fig. 1 is a flowchart of a method for determining a driving demand torque according to an embodiment of the present invention, which is applicable to a case where a driving demand torque is determined, and which may be executed by a device for determining a driving demand torque, which may be integrated in a vehicle, specifically, the method includes the following steps:
s110, searching a pre-stored information association table, and determining a first association information item and a second association information item corresponding to the current vehicle target driving mode.
The information association table is a data table or a graph for storing information, and the information association table in this embodiment includes a first associated information item and a second associated information item corresponding to at least one driving mode, where the driving mode may include, but is not limited to, an economy driving mode, a normal driving mode, a sport driving mode, and the like, the driving mode may correspond to the same vehicle type, and may also correspond to different vehicle types, and the driving modes described in this embodiment take an economy driving mode, a normal driving mode, and a sport driving mode of the same vehicle type as examples. The different driving modes have corresponding first associated information items and second associated information items. The first associated information item is used for storing an associated relationship between the vehicle speed and the output torque, and the associated relationship may be a function representing the relationship between the vehicle speed and the output torque, or may be a graph, and the associated relationships between the vehicle speed and the output torque corresponding to different driving modes are different. The second related information item is used for storing the related relationship between the accelerator pedal opening and the weight coefficient, and similar to the related relationship between the vehicle speed and the output torque, the related relationship between the accelerator pedal opening and the weight coefficient may be a function or a graph, and the related relationships between the accelerator pedal opening and the weight coefficient corresponding to different driving modes are different. Optionally, when the correlation is represented by a graph, the correlation between the vehicle speed and the output torque corresponding to the three driving modes may be plotted in one graph, and the correlation between the accelerator opening and the weight coefficient corresponding to the three driving modes may be plotted in another graph, so as to fully understand the output torque corresponding to different vehicle speeds in different driving modes of the same vehicle type and the weight coefficient corresponding to different accelerator opening in different driving modes, and provide important support for ensuring the performances of the vehicle, such as economy, dynamics, drivability, and the like.
The first related information item may be determined in advance by combining a set of historical vehicle speeds of the vehicle corresponding to the corresponding driving modes and a set of historical output characteristics of a power system of the vehicle with a given first analysis strategy, and the second related information item may be determined in advance by combining a set of historical accelerator pedal openings of the vehicle corresponding to the corresponding driving modes with a given second analysis strategy. The first analysis strategy and the second analysis strategy may be set by self based on an actual situation, for example, when the driving mode is economical, the first analysis strategy may be that the output characteristic of the corresponding power system meets a set condition, the set condition may be that the driving efficiency in the output characteristic is greater than or equal to a driving efficiency threshold, the recovery efficiency is greater than or equal to a recovery efficiency threshold, and the driving efficiency threshold and the recovery efficiency threshold are not limited in embodiments, where the driving efficiency is an energy conversion rate at which electric energy is converted into mechanical energy, and the recovery efficiency is an energy conversion rate at which excess energy released by the vehicle in braking or inertia is converted into electric energy by a generator. The second analysis strategy may be that when the opening degree of the accelerator pedal is small, the weight coefficient changes more smoothly, and when the opening degree is large, the weight coefficient changes more quickly. The embodiment does not limit the specific determination process of the first associated information item and the second associated information item.
According to the target driving mode of the current vehicle, an information association table is searched, so that a first associated information item and a second associated information item corresponding to the target driving mode can be determined, and basis is provided for determination of subsequent output torque and weight coefficient.
And S120, determining the output torque corresponding to the current vehicle speed of the target driving mode according to the first related information item.
If the incidence relation between the vehicle speed and the output torque stored in the first incidence information item is a function, the output torque corresponding to the current vehicle speed can be determined by substituting the current vehicle speed into the corresponding function. If the correlation between the vehicle speed and the output torque stored in the first correlation information item is a curve graph, the output torque corresponding to the current vehicle speed is directly searched according to the curve graph. In practical application, in order to determine the output torque corresponding to the current vehicle speed conveniently, the function can be converted into a curve graph, the output torque is determined through the curve graph, the method is simple and convenient, and the change trend of the output torque along with the vehicle speed is convenient to understand.
And S130, determining a weight coefficient corresponding to the current accelerator opening degree of the target driving mode according to the second related information item.
The weight coefficient is a coefficient corresponding to the output torque and is between 0 and 1, the weight coefficient is related to the opening degree of an accelerator pedal and the driving mode, the corresponding weight coefficient is different for the same driving mode and the different opening degree of the accelerator pedal, and the corresponding weight coefficient is also different for the same opening degree of the accelerator pedal and the different driving mode. And searching the second information association item according to the target driving mode, so that the weight coefficient corresponding to the current accelerator pedal opening degree can be determined.
And S140, determining the current driving demand torque of the target driving mode according to the output torque and the weight coefficient.
Specifically, the output torque and the weight coefficient may be calculated according to a certain operation rule to obtain the current driving demand torque of the target driving mode, where the operation rule may be a driving demand torque calculation formula, and the current driving demand torque may be obtained by substituting the output torque and the weight coefficient into the driving demand torque calculation formula. The driving demand torque calculation formula may be determined according to actual needs.
The embodiment of the invention provides a method for determining a driving demand torque, which comprises the steps of determining a first associated information item and a second associated information item corresponding to a current vehicle target driving mode by searching a prestored information association table, determining an output torque corresponding to a current vehicle speed of the target driving mode according to the first associated information item, determining a weight coefficient corresponding to a current accelerator pedal opening degree of the target driving mode according to the second associated information item, and determining the current driving demand torque of the target driving mode according to the output torque and the weight coefficient. Compared with the prior art, the embodiment of the invention respectively determines the corresponding output torque and the weight coefficient according to the current speed and the current opening degree of the accelerator pedal, further determines the driving demand torque according to the output torque and the weight coefficient, effectively determines the current driving demand torque of the target driving mode, and provides important basis for improving the performances of economy, dynamic property, drivability and the like of the whole vehicle.
Example two
Fig. 2 is a flowchart of a method for determining a driving demand torque according to a second embodiment of the present invention, which is embodied on the basis of the second embodiment, and specifically includes the following steps:
s210, searching a pre-stored information association table, and determining a first association information item and a second association information item corresponding to the current vehicle target driving mode.
The first related information item of the embodiment is determined in advance by combining a set of historical vehicle speeds of the vehicle corresponding to the corresponding driving modes and a set of historical output characteristics of a vehicle power system with a given first analysis strategy, and the second related information item is determined in advance by combining a set of historical accelerator pedal opening degrees of the vehicle corresponding to the corresponding driving modes with a given second analysis strategy. The output torque comprises a maximum output torque and a minimum output torque, the maximum output torque and the minimum output torque correspond to the same vehicle speed, and the maximum output torque and the minimum output torque correspond to the same vehicle speed in different driving modes are different.
The driving efficiency of the power system changes along with the change of the vehicle speed and the output torque, when the vehicle speed is not changed, the driving efficiency of the power system increases firstly and then decreases along with the increase of the output torque, and based on the consideration, corresponding first analysis strategies are set for different driving modes. For example, for the economy driving mode, the first analysis strategy is that when the vehicle speed is determined, the corresponding maximum output torque is such that the corresponding driving efficiency of the power system at this time is greater than or equal to the driving efficiency threshold, and the difference value from the maximum output torque of the power system is smaller than the preset difference value, wherein the maximum output torque of the power system is known, and based on this consideration, the maximum output torque function of the economy driving mode is set, and the curve corresponding to the maximum output torque function is shown as curve 1 in fig. 3, and fig. 3 is a schematic diagram of the maximum output torque curves corresponding to the three driving modes of one vehicle type provided by the second embodiment of the present invention. The recovery efficiency of the powertrain is similar to the driving efficiency, when the vehicle speed is determined, the corresponding minimum output torque is such that the corresponding recovery efficiency of the powertrain is greater than or equal to the first recovery efficiency threshold at this time, and is the same as the minimum output torque of the powertrain, wherein the minimum output torque of the powertrain is known, and a minimum output torque function of the eco-drive mode is set based on such consideration, a curve corresponding to the minimum output torque function is shown as a curve 1 in fig. 4, and fig. 4 is a schematic diagram of minimum output torque curves corresponding to three driving modes of a vehicle type provided by the second embodiment of the present invention. For the normal type driving mode, the first analysis strategy is such that the maximum output torque is the same as the maximum output torque of the powertrain, the maximum output torque function of the normal type driving mode is set based on this consideration, the curve corresponding to the maximum output torque function is shown as curve 2 in fig. 3, when the vehicle speed is determined, the corresponding minimum output torque is such that the corresponding recovery efficiency of the powertrain at this time is greater than or equal to the second recovery efficiency threshold, and the difference between the minimum output torque and the minimum output torque of the economy type is smaller than the set difference, the minimum output torque function of the normal type driving mode is set based on this consideration, the curve corresponding to the minimum output torque function is shown as curve 2 in fig. 4, and the first recovery efficiency threshold is larger than the second recovery efficiency threshold. For the sporty driving mode, the first analysis strategy is to set the maximum output torque function for the sporty driving mode, which corresponds to a curve as shown by curve 2 in fig. 3, the minimum output torque being zero output torque, and correspondingly, the minimum output torque function, which corresponds to a curve as shown by curve 3 in fig. 4, to be the same as the maximum output torque of the powertrain system based on this consideration.
The weight factor is related to a driving mode and an accelerator pedal opening, and the second analysis strategy is determined based on the driving mode and the accelerator pedal opening. For example, for the economy driving mode, the second analysis strategy is that when the opening degree of the accelerator pedal is smaller, the change of the weight coefficient is gentler, and when the opening degree of the accelerator pedal is larger, the change of the weight coefficient is faster, so that a weight coefficient function is set, a curve corresponding to the weight coefficient function is shown in fig. 5, and fig. 5 is a schematic diagram of weight coefficient curves corresponding to three driving modes of a vehicle type provided by the second embodiment of the present invention. For the sporty driving mode, the second analysis strategy is that when the accelerator opening is small, the weight coefficient changes faster, and when the accelerator opening is large, the weight coefficient changes slower, and the corresponding curve is shown in fig. 5. For the normal driving mode, the second analysis strategy is that the weight coefficient is between the economy driving mode and the sport driving mode, and the corresponding curve is shown in fig. 5.
And S220, acquiring a first associated information item corresponding to the target driving mode and containing a vehicle speed and output torque association relation, wherein the association relation comprises a maximum output torque function and a minimum output torque function when the vehicle speed is an independent variable.
The first relevant information items corresponding to different driving modes have different relevance between the vehicle speed and the output torque, namely, the corresponding maximum output torque function and the corresponding minimum output torque function are different, the curve corresponding to the maximum output torque function is shown in fig. 3, and the curve corresponding to the minimum output torque function is shown in fig. 4. According to the target driving mode, the corresponding function curve can be determined.
And S230, determining the maximum output torque corresponding to the current vehicle speed according to the maximum output torque function.
According to the graph shown in fig. 3, the maximum output torque corresponding to the current vehicle speed in different driving modes can be determined.
And S240, determining the minimum output torque corresponding to the current vehicle speed according to the minimum output torque function.
According to the graph shown in fig. 4, the minimum output torque corresponding to the current vehicle speed in different driving modes can be determined.
And S250, recording the maximum output torque and the minimum output torque as the output torque of the current vehicle speed.
The maximum output torque and the minimum output torque are collectively referred to as output torque.
And S260, acquiring a second associated information item corresponding to the target driving mode and containing an accelerator pedal opening degree and weight coefficient association relation, wherein the association relation comprises a weight coefficient function when the accelerator pedal opening degree is an independent variable.
The curves corresponding to the weight coefficient functions of different driving modes are shown in fig. 4, and the corresponding weight coefficient curves can be determined according to the target driving mode.
And S270, determining a weight coefficient corresponding to the current accelerator pedal opening according to the weight coefficient function.
Similar to the determination of the output torque, after the weight coefficient curve is determined, the corresponding weight coefficient can be determined according to the current accelerator opening.
And S280, determining the current driving demand torque of the target driving mode according to a driving demand torque calculation formula, the maximum output torque, the minimum output torque and a weight coefficient.
Specifically, the driving demand torque calculation formula of the present embodiment specifically includes:
T＝T1*β+T2*(1-β)
wherein T is the current driving demand torque of the target driving mode, T1To maximum output torque, T2Alternatively, after the driving demand torque curve is determined, the driving demand torque curve may be smoothed so that the driving demand torque curves of the eco-type, normal-type and sporty-type driving modes change smoothly under the same accelerator opening and the same vehicle speed, respectively, as shown in fig. 6 and 7, fig. 6 is a graph illustrating an accelerator opening dimension of one driving demand torque provided by a second embodiment of the present invention, fig. 7 is a graph illustrating a vehicle speed dimension of one driving demand torque provided by the second embodiment of the present invention, fig. 6 is a graph illustrating the driving demand torque smoothed from the accelerator opening dimension, and fig. 7 is a graph illustrating the driving demand torque smoothed from the vehicle speed dimension.
On the basis of the embodiment, the maximum output torque and the minimum output torque are determined according to the first associated information item, the weight coefficient is determined according to the second associated information item, the driving requirement torque is determined according to the maximum output torque, the minimum output torque, the weight coefficient and a driving requirement torque calculation formula, the vehicle speed and the opening degree of an accelerator pedal are fully utilized, the driving requirement torque is effectively determined, and the driving requirement is met.
EXAMPLE III
Fig. 8 is a structural diagram of a device for determining a driving demand torque according to a third embodiment of the present invention, which can execute the method for determining a driving demand torque according to the third embodiment of the present invention, specifically, the device includes:
the information determining module 310 is configured to search a pre-stored information association table, and determine a first association information item and a second association information item corresponding to a current vehicle target driving mode;
the output torque determining module 320 is configured to determine, according to the first relevant information item, an output torque corresponding to the current vehicle speed of the target driving mode;
a weight coefficient determining module 330, configured to determine, according to the second related information item, a weight coefficient corresponding to a current accelerator pedal opening of the target driving mode;
and the required torque determining module 340 is used for determining the current driving required torque of the target driving mode according to the output torque and the weight coefficient.
The third embodiment of the invention provides a device for determining a driving demand torque, which determines a first associated information item and a second associated information item corresponding to a current vehicle target driving mode by searching a pre-stored information association table, determines an output torque corresponding to a current vehicle speed of the target driving mode according to the first associated information item, determines a weight coefficient corresponding to a current accelerator opening degree of the target driving mode according to the second associated information item, and determines the current driving demand torque of the target driving mode according to the output torque and the weight coefficient. Compared with the prior art, the embodiment of the invention respectively determines the corresponding output torque and the weight coefficient according to the current vehicle speed and the current accelerator pedal opening, and further determines the driving demand torque according to the output torque and the weight coefficient, thereby effectively determining the current driving demand torque of the target driving mode.
On the basis of the above embodiment, the output torque determination module 320 includes:
the first information acquisition unit is used for acquiring a first associated information item corresponding to the target driving mode and containing a vehicle speed and output torque association relation, wherein the association relation comprises a maximum output torque function and a minimum output torque function when the vehicle speed is an independent variable;
the maximum output torque determining unit is used for determining the maximum output torque corresponding to the current vehicle speed according to the maximum output torque function;
the minimum output torque determining unit is used for determining the minimum output torque corresponding to the current vehicle speed according to the minimum output torque function;
and the output torque determining unit is used for recording the maximum output torque and the minimum output torque as the output torque of the current vehicle speed.
On the basis of the above embodiment, the weight coefficient determining module 330 includes:
a second information acquisition unit, configured to acquire a second associated information item including an association relationship between an accelerator pedal opening degree and a weight coefficient, where the association relationship includes a weight coefficient function when the accelerator pedal opening degree is an independent variable, corresponding to the target driving mode;
and the weight coefficient determining unit is used for determining a weight coefficient corresponding to the current accelerator pedal opening according to the weight coefficient function.
On the basis of the above embodiment, the required torque determination module 340 includes:
and the required torque determining unit is used for determining the current driving required torque of the target driving mode according to a driving required torque calculation formula, the maximum output torque, the minimum output torque and a weight coefficient.
On the basis of the above embodiment, the driving demand torque calculation formula is specifically:
T＝T1*β+T2*(1-β)
wherein T is the current driving demand torque of the target driving mode, T1To maximum output torque, T2For minimum output torque, β is a weighting factor.
On the basis of the above embodiment, the information association table includes a first association information item and a second association information item corresponding to at least one driving mode;
the first associated information item is determined in advance by combining a given first analysis strategy with a historical vehicle speed set of a vehicle corresponding to a corresponding driving mode and a historical output characteristic set of a vehicle power system;
the second related information items are determined in advance by combining the historical accelerator pedal opening degree set of the vehicle corresponding to the corresponding driving mode with a given second analysis strategy.
The determination device of the driving demand torque provided by the third embodiment of the invention can be used for executing the determination method of the driving demand torque provided by the above embodiment, and has corresponding functions and beneficial effects.
Example four
Fig. 9 is a structural diagram of a vehicle according to a fourth embodiment of the present invention, and specifically, referring to fig. 9, the vehicle includes: the number of the controllers 410 in the vehicle may be one or more, one controller 410 is taken as an example in fig. 9, the controller 410, the memory 420, the input device 430 and the output device 440 in the vehicle may be connected by a bus or in another manner, and the controller 410, the memory 420, the input device 430 and the output device 440 in the vehicle are connected by a bus in fig. 9.
The memory 420 serves as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the determination method of the driving demand torque in the embodiment of the present invention. The controller 410 executes various functional applications of the vehicle and data processing, that is, implements the determination method of the driving demand torque of the above-described embodiment, by executing software programs, instructions, and modules stored in the memory 420.
The memory 420 mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 420 may further include memory located remotely from the controller 410, which may be connected to the vehicle over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the vehicle. The output device 440 may include a display device such as a display screen, and an audio device such as a speaker and a buzzer.
The vehicle according to the fourth embodiment of the present invention belongs to the same inventive concept as the method for determining the driving demand torque according to the first embodiment, and the technical details that are not described in detail in the present embodiment can be referred to the above embodiments, and the present embodiment has the same advantageous effects as the method for determining the driving demand torque.
EXAMPLE five
Fifth embodiment of the present invention also provides a storage medium having stored thereon a computer program that, when executed by a processor, implements the determination method of the driving demand torque according to the above-described embodiment of the present invention.
Of course, the storage medium containing the computer-executable instructions provided by the embodiment of the present invention is not limited to the operations in the determination method of the driving demand torque as described above, and may also perform the relevant operations in the determination method of the driving demand torque provided by the embodiment of the present invention, and has the corresponding functions and advantages.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes instructions for enabling a computer device (which may be a robot, a personal computer, a server, or a network device) to execute the method for determining the driving demand torque according to the embodiments of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A determination method of a driving request torque, characterized by comprising:
searching a pre-stored information association table, and determining a first association information item and a second association information item corresponding to the current vehicle target driving mode;
determining an output torque corresponding to the current vehicle speed of the target driving mode according to the first associated information item;
determining a weight coefficient corresponding to the current accelerator pedal opening degree of the target driving mode according to the second associated information item;
determining the current driving demand torque of the target driving mode according to the output torque and a weight coefficient;
the determining the output torque corresponding to the current vehicle speed of the target driving mode according to the first related information item includes:
acquiring a first associated information item corresponding to the target driving mode and containing a vehicle speed and output torque association relation, wherein the association relation comprises a maximum output torque function and a minimum output torque function when the vehicle speed is an independent variable;
determining the maximum output torque corresponding to the current vehicle speed according to the maximum output torque function;
determining the minimum output torque corresponding to the current vehicle speed according to the minimum output torque function;
and recording the maximum output torque and the minimum output torque as the output torque of the current vehicle speed.
2. The method according to claim 1, wherein the determining a weight coefficient corresponding to a current accelerator pedal opening of the target driving pattern according to the second related information item includes:
acquiring a second associated information item corresponding to the target driving mode and containing an association relation between the opening degree of an accelerator pedal and a weight coefficient, wherein the association relation comprises a weight coefficient function when the opening degree of the accelerator pedal is an independent variable;
and determining a weight coefficient corresponding to the current accelerator pedal opening according to the weight coefficient function.
3. The method according to claim 1, wherein said determining the current driving demand torque of the target driving mode based on the output torque and a weight coefficient comprises:
and determining the current driving demand torque of the target driving mode according to a driving demand torque calculation formula, the maximum output torque, the minimum output torque and a weight coefficient.
4. The method according to claim 3, characterized in that the driving demand torque calculation formula is:
T＝T1*β+T2*(1-β)
wherein T is the current driving demand torque of the target driving mode, T1To maximum output torque, T2For minimum output torque, β is a weighting factor.
5. The method according to claim 1, wherein the information association table comprises a first association information item and a second association information item corresponding to at least one driving mode;
the first associated information item is determined in advance by combining a given first analysis strategy with a historical vehicle speed set of a vehicle corresponding to a corresponding driving mode and a historical output characteristic set of a vehicle power system;
the second related information items are determined in advance by combining the historical accelerator pedal opening degree set of the vehicle corresponding to the corresponding driving mode with a given second analysis strategy.
6. A determination device of a driving request torque, characterized by comprising:
the information determining module is used for searching a prestored information association table and determining a first association information item and a second association information item corresponding to the current vehicle target driving mode;
the output torque determining module is used for determining the output torque corresponding to the current vehicle speed of the target driving mode according to the first associated information item;
the weight coefficient determining module is used for determining a weight coefficient corresponding to the current accelerator pedal opening degree of the target driving mode according to the second related information item;
the required torque determining module is used for determining the current driving required torque of the target driving mode according to the output torque and a weight coefficient;
the output torque determination module includes:
the first information acquisition unit is used for acquiring a first associated information item corresponding to the target driving mode and containing a vehicle speed and output torque association relation, wherein the association relation comprises a maximum output torque function and a minimum output torque function when the vehicle speed is an independent variable;
the maximum output torque determining unit is used for determining the maximum output torque corresponding to the current vehicle speed according to the maximum output torque function;
the minimum output torque determining unit is used for determining the minimum output torque corresponding to the current vehicle speed according to the minimum output torque function;
and the output torque determining unit is used for recording the maximum output torque and the minimum output torque as the output torque of the current vehicle speed.
7. A vehicle, characterized by comprising:
one or more controllers;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more controllers, the one or more controllers are caused to implement the determination method of driving demand torque according to any one of claims 1 to 5.
8. A storage medium on which a computer program is stored, characterized in that the program, when executed by a controller, implements the determination method of driving demand torque according to any one of claims 1 to 5.
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977082B (en) * | 2019-12-17 | 2022-10-18 | 比亚迪股份有限公司 | Torque distribution method and device, modeling method and automobile |
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| CN113119742A (en) * | 2019-12-30 | 2021-07-16 | 观致汽车有限公司 | Method and system for determining required torque of vehicle and vehicle |
| CN113492860B (en) * | 2020-04-08 | 2022-12-13 | 华为技术有限公司 | Driving performance adjusting method and device |
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| CN111942175B (en) * | 2020-08-12 | 2022-04-22 | 华人运通(江苏)技术有限公司 | Torque control method, torque control device, vehicle, electronic device, and storage medium |
| CN114103951B (en) * | 2020-08-28 | 2023-12-22 | 上海汽车集团股份有限公司 | Parameter determination method and related device |
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| CN114435364B (en) * | 2022-01-27 | 2023-08-04 | 东风汽车集团股份有限公司 | Vehicle accelerator pedal control method and related equipment |
| CN114435146B (en) * | 2022-03-01 | 2023-11-14 | 一汽解放汽车有限公司 | Vehicle control method, device, computer device and storage medium |
| CN116552525B (en) * | 2023-06-07 | 2024-04-05 | 广州汽车集团股份有限公司 | Vehicle control method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2918338B1 (en) * | 2007-07-06 | 2009-10-30 | Renault Sas | DEVICE AND METHOD FOR ASSISTING A VEHICLE. |
| CN103192737B (en) * | 2013-03-25 | 2015-10-07 | 吉林大学 | Drive control method for all-electric car |
| CN103935264B (en) * | 2014-04-29 | 2016-01-27 | 大连理工大学 | A kind of electric vehicle driver demand torque calculation method |
| CN104828090B (en) * | 2014-12-09 | 2018-01-19 | 北汽福田汽车股份有限公司 | Control method, device and the vehicle of vehicle |
| CN107472080B (en) * | 2016-10-31 | 2020-08-18 | 宝沃汽车（中国）有限公司 | Vehicle torque control method and device and vehicle |
| CN106585426B (en) * | 2016-12-23 | 2019-03-08 | 潍柴动力股份有限公司 | A kind of Motor torque control method and device |
| CN107738649B (en) * | 2017-10-31 | 2020-04-24 | 潍柴动力股份有限公司 | Method and device for determining driving demand torque |
| CN109515200A (en) * | 2018-11-30 | 2019-03-26 | 北京新能源汽车股份有限公司 | The regenerating brake control method and device of vehicle and single pedal electric car |
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